Ubuntu
xserver-xorg-video-intel package

  1. Bug #930807
  2. Comment #15

Comment 15 for bug 930807

Revision history for this message
Bzzz (da-bzzz) wrote : Re: [Precise Alpha2] Intel GPU X4500 "hung", screen corruption without total freeze

And I forgot to mention something else: On re-login, the screen was set to 800x600 (native 1440x900px). That also happened last weekend without being able to fix it, which was my initial motivation of upgrading to precise (besides an audio problem that is now fixed).
Rebooting didn't help - I have the normal login screen at native resolution, login is fine, and after some seconds when the first windows like the konsole appear, it somehow switches to 800x600 again. Seconds before that, I had the same black areas around the three window control buttons as in post #5. But that was the first time I noticed that, usually everything looks clean and then out-of-nowhere the resolution changes. Pressing the Fn+F7 combination for switching through screen combinations (no display is connected) changes back to native screen size.

Shutting down, removing the battery and ac connector, hitting the power knob and then connecting power again worked. This time, it didn't switch...